High schooler Shiori lives with her education-minded mother. Struggling with her life in Tokyo, she travels on behalf of her grandmother to the mystical island Yakushima, where she meets a robot.
When Nina wins free airline tickets, she leaves her dingy apartment and part-time factory job in Yamato City, Japan for Singapore with her friend Su.
An average high school baseball team is weakened when Hiroki, one of the star players on the team, receives a failing grade in school and cannot participate in any of the club’s activities till he passes again.
When a mysterious boy named Frey steals Ghost and Specter's Eyecons, they must call upon the powers of past Kamen Riders to defeat him.